High‐resolution particle image velocimetry (PIV) measurements of the flow inside the stack‐heat exchanger couple of a thermoacoustic refrigerator driven at high amplitude

2007 ◽  
Vol 121 (5) ◽  
pp. 3195-3195
Author(s):  
Arganthael Berson ◽  
Philippe Blanc‐Benon
Keyword(s):  
Particle Image Velocimetry ◽  
Heat Exchanger ◽  
High Resolution ◽  
Particle Image ◽  
High Amplitude ◽  
Piv Measurements ◽  
Image Velocimetry ◽  
Thermoacoustic Refrigerator

scholarly journals Correlation Analysis of High-Resolution Particle Image Velocimetry Data of Screeching Jets

AIAA Journal ◽  
2019 ◽  
Vol 57 (2) ◽  
pp. 735-748 ◽  
Author(s):  
D. J. Tan ◽  
D. Honnery ◽  
A. Kalyan ◽  
V. Gryazev ◽  
S. A. Karabasov ◽  
...  
Keyword(s):  
Particle Image Velocimetry ◽  
High Resolution ◽  
Correlation Analysis ◽  
Particle Image ◽  
Particle Image Velocimetry Data ◽  
Image Velocimetry

Time-Resolved Particle Image Velocimetry (PIV) Measurements in a Radial Diffuser Pump

2009 ◽  
Author(s):  
Jianjun Feng ◽  
Friedrich-Karl Benra ◽  
Hans Josef Dohmen
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Time Resolved ◽  
Piv Measurements ◽  
Part Load ◽  
Channel Characteristic ◽  
Image Velocimetry ◽  
Pump Stage ◽  
Low Specific Speed ◽  
Load Conditions

The truly time-variant unsteady flow in a low specific speed radial diffuser pump stage has been investigated by time-resolved Particle Image Velocimetry (PIV) measurements. The measurements are conducted at the midspan of the blades for the design condition and also for some severe part-load conditions. The instantaneous flow fields among different impeller channels are analyzed and compared in detail, and more attention has been paid to flow separations at part-load conditions. The analysis of the measured results shows that the flow separations at two adjacent impeller channels are quite different at some part-load conditions. The separations generally exhibit a two-channel characteristic.

Wave-in-Deck Impact Loads in Relation With Wave Kinematics

2017 ◽  
Author(s):  
Jule Scharnke ◽  
Rene Lindeboom ◽  
Bulent Duz
Keyword(s):  
Particle Image Velocimetry ◽  
Particle Image ◽  
Impact Load ◽  
Breaking Waves ◽  
Offshore Structures ◽  
Small Scale ◽  
Impact Loads ◽  
Piv Measurements ◽  
Wave Kinematics ◽  
Image Velocimetry

Breaking waves have been studied for many decades and are still of interest as these waves contribute significantly to the dynamics and loading of offshore structures. In current MARIN research this awareness has led to the setup of an experiment to determine the kinematics of breaking waves using Particle Image Velocimetry (PIV). The purpose of the measurement campaign is to determine the evolution of the kinematics of breaking focussed waves. In addition to the PIV measurements in waves, small scale wave-in-deck impact load measurements on a fixed deck box were carried out in the same wave conditions. To investigate the link between wave kinematics and wave-in-deck impact loads, simplified loading models for estimating horizontal deck impact loads were applied and compared to the measured impact loads. In this paper, the comparison of the model test data to estimated loads is presented.

High Resolution Particle Image Velocimetry and CH-PLIF Measurements and Analysis of a Shear Layer Stabilized Flame

2015 ◽  
Vol 138 (3) ◽  
Author(s):  
C. W. Foley ◽  
I. Chterev ◽  
J. Seitzman ◽  
T. Lieuwen
Keyword(s):  
Particle Image Velocimetry ◽  
High Resolution ◽  
Shear Layer ◽  
Flow Velocity ◽  
Particle Image ◽  
Flame Stabilization ◽  
Flow Conditions ◽  
Local Flow ◽  
Image Velocimetry ◽  
Flow Velocities

Understanding the mechanisms and physics of flame stabilization and blowoff of premixed flames is critical toward the design of high velocity combustion devices. In the high bulk flow velocity situation typical of practical combustors, the flame anchors in shear layers where the local flow velocities are much lower. Within the shear layer, fluid strain deformation rates are very high and the flame can be subjected to significant stretch levels. The main goal of this work was to characterize the flow and stretch conditions that a premixed flame experiences in a practical combustor geometry and to compare these values to calculated extinction values. High resolution, simultaneous particle image velocimetry (PIV) and planar laser induced fluorescence of CH radicals (CH-PLIF) measurements are used to capture the flame edge and near-field stabilization region. When approaching lean limit extinction conditions, we note characteristic changes in the stretch and flow conditions experienced by the flame. Most notably, the flame becomes less critically stretched when fuel/air ratio is decreased. However, at these lean conditions, the flame is subject to higher mean flow velocities at the edge, suggesting less favorable flow conditions are present at the attachment point of the flame as blowoff is approached. These measurements suggest that blowoff of the flame from the shear layer is not directly stretch extinction induced, but rather the result of an imbalance between the speed of the flame edge and local tangential flow velocity.

Turbulence Measurements by High Resolution Time Series Particle Image Velocimetry

2002 ◽  
Vol 2002 (0) ◽  
pp. 121-122
Author(s):  
Mamoru TANAHASHI ◽  
Yuichi FUKUCHI ◽  
Katsuhiko FUKUZATO ◽  
Toshio MIYAUCHI
Keyword(s):  
Time Series ◽  
Particle Image Velocimetry ◽  
High Resolution ◽  
Particle Image ◽  
Resolution Time ◽  
Turbulence Measurements ◽  
Image Velocimetry
Sign in / Sign up

Export Citation Format

Share Document